Don’t ask him how he is because if he starts talking about his health you’ll never _______ him.
________the two designs and you will find what problem there is with yours.
This special school accepts all disabled students, _____educational level and background.
--- I hear you ________at Smith’s. --- Yes, I________there for about three months.
-----He should have come to join in the thorough cleaning. -----He________, I think. It’s not his turn.
In recent years_________global warming is becoming________concern for people all over the world.